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A Multi-Band Spiral-Shaped Patch CPW-Fed CP Antenna

Document Type : Reseach Article

Author

1 Department of Electrical Engineering, Urmia Branch, Islamic Azad University, Urmia, Iran.

2 Microwave and Antenna Research Center, Urmia Branch, Islamic Azad University, Urmia, Iran.

10.57647/j.mjee.2025.1902.25

Abstract

A miniaturized quadruple-band antenna with a spiral-shaped patch is proposed to cover wireless system bands including GSM, Wi-Fi/WLAN (IEEE 802.11b/g/n), Extended UMTS (IEEE 802.11y), WiMAX and the Wi-Fi/WLAN2 (IEEE 802.11a/h/j). The antenna design features a CPW-fed configuration with a spiral-shaped patch, vertical slot, and open-end slits in a rectangular ground plane. In the design of this antenna, the POES structure is used to improve the characteristics of the antenna. A prototype antenna was constructed and tested, demonstrating operation across four frequency bands ranging from 1.71 GHz to 7.1 GHz. The antenna exhibits circular polarization, a monopole-like radiation pattern, and good gain over its operating bands,making it suitable for GSM, Extended UMTS, WiMAX, and Wi-Fi/WLAN applications. The antennas overall dimension is 27×25 mm2.

Keywords

References
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Majlesi Journal of Electrical Engineering
Volume 19, Issue 2
June 2025
Pages 1-8
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